Download or read book Evaluation of F1 Cows Sired by Brahman Boran and Tuli Bulls for Reproductive and Maternal Performance Traits and Cow Longevity written by Carl Muntean and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Birth (BWT) (n = 1,335) and weaning weight (WWT) (n = 1,246), pregnancy rate (PR) (n = 1,513), calf crop born (CCB) (n = 1,504), calf crop weaned (CCW) (n = 1,500), cow weight at palpation (CW) (n = 1,662), and cow body condition score (BCS) (n = 1,666) were evaluated from 1994 to 2010 in 143 F1 females sired by Brahman (B), Boran (Bo), and Tuli (T) bulls and out of Angus and Hereford cows. Mouth scores (MS) (n = 253) were assigned to the remaining cows from 2004 to 2009, excluding 2008. Pregnancy rate, CCB, CCW, CW, and BCS were evaluated using a model that consisted of sire of cow breed, dam of cow breed, and calf's birth year/age of cow as fixed effects. Cow within sire of cow within sire breed of cow and sire of cow within sire breed of cow were used as random effects. Birth weight and WWT were evaluated including sex of calf in the same model. Mouth scores were evaluated with two models. When broken and solid mouths were scored 1 and smooth 0, B- and Bo-sired cows (0.87 and 0.83) had higher scores (P 0.05) than T-sired females (0.65). When solid mouths were scored 1 and smooth and broken scored 0, B-sired cows (0.40) were higher than T (0.07) (P 0.05), and Bo (0.30) sired cows were not different from either (P 0.05). The model for MS only included sire of cow breed and calf's birth year/age of cow as fixed effects. Two-way interactions were tested for significance. Calf's birth year/age of cow was important for all traits (P 0.05) except the first MS model. Adjusted means (LSM) for BWT for calves out of cows by B, Bo, and T sires were 34.1, 34.0, and 34.1 kg respectively, and were not different from one another (P 0.05). Least squares means for WWT for calves out of cows by B, Bo, and T sires were 236.7, 217.5, and 197.2 kg, respectively, and were significantly different. For both BWT and WWT, male calves were heavier (P

Download or read book Evaluation of F1 Cows Sired by Brahman Boran and Tuli for Reproductive and Maternal Performance and Cow Longevity written by Samantha F. Cunningham and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Birth (BW) (n = 1,107) and weaning weight (WW) (n = 1,024), pregnancy rate(PR) (n = 1,255), calf crop born (CCB) (n = 1,232), calf crop weaned (CCW) (n =1,225), and cow's weight at palpation (CW) (n = 1,403) were evaluated from 1994 to 2004 in 143 F1 females who were sired by Brahman (B), Boran (Bo), and Tuli (T) bulls and who were out of Angus and Hereford cows. In 2004, mouth scores (MS) (n = 71)were assigned to the remaining females. PR, CCB, CCW, CW, and BCS were evaluated using a model that consisted of sire of dam breed, dam of dam breed, and calf's birth year/age of dam as fixed effects. Sire of dam within sire breed of dam and dam within sire of dam within sire breed of dam were used as random effects. BW and WW were analyzed using the same model including calf's gender. Two-way interactions were tested for significance. Year/age was significant for all traits (P 0.05). Adjusted means for BW for calves out of cows by B, Bo, and T sires were 35.66, 35.38, and 35.59 kg respectively, and were not different (P 0.05). Adjusted means for WW for calves out of cows by B, Bo, and T sires were 233.4, 220.1, and 208.2 kg respectively, and were significantly different. For both BW and WW, male calves were heavier (P 0.05) than females. Adjusted means for PR for females sired by B, Bo, and T bulls were 0.914, 0.945, and 0.920, and were not different (P 0.05). Adjusted means for CCB for females sired by B, Bo, and T bulls were 0.890, 0.943, and 0.910 respectfully, and Bo was higher (P

Download or read book Comparison of F1 Cows Sired by Brahman Boran and Tuli Bulls for Reproductive Maternal and Cow Longevity Traits written by Assalia Hassimi Maiga and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Birth weight (BW) (n =1277) and weaning weight (WW) (n = 1090) of calves, pregnancy rate (PR) (n = 1386), calf crop born (CCB) (n = 1386), calf crop weaned (CCW) (n = 1294), cow's weight at palpation (CW) (n = 1474) and cow body condition score (BCS) (n = 1473) were evaluated from 1994 to 2006 in 143 F1 cows sired by Brahman (B), Boran (Bo) and Tuli (T) bulls and born to Angus and Hereford cows. Mouth scores (MS) (n = 139) were assigned to the remaining cows in 2004 and 2005. Fixed effects included sire breed of cow, dam breed of cow, and calf's birth year/age of cow; random effects included cow and sire of cow. BW and WW were evaluated using the same model and adding gender for both and age for WW. All two-way interactions were tested for significance. Calf's birth year/age of dam was significant for all traits (P

Download or read book Evaluation of F One Cows Sired by Brahman Boran and Tuli for Reproductive and Maternal Performance written by Andres Ernesto Ducoing Watty and published by . This book was released on 2002 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Birth Weaning Feedlot and Carcass Traits of F One Calves Sired by Braham Boran and Tuli Bulls written by Andy Dale Herring and published by . This book was released on 1994 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Master s Theses Directories written by and published by . This book was released on 2007 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Education, arts and social sciences, natural and technical sciences in the United States and Canada".

Download or read book Cumulated Index Medicus written by and published by . This book was released on 1996 with total page 1340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Birth Weaning and Carcass Traits of F1 Calves Sired by Brahman Bulls written by Jeff Wade Kuykendall and published by . This book was released on 1996 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Performance Traits in Brahman Cattle written by Kara J. Matheney and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of these studies were (1) evaluate the relationship between temperament, blood parameters, and performance in Brahman calves (n = 300); (2) evaluate the relationship between residual feed intake (RFI) and reproductive development in Brahman bulls (n = 41). Serum was collected at 24 h and d 21 to 24, and analyzed for total protein (TP) immunoglobulin G (IgG), and cortisol (CS). Calves were weighed at 24 h, weighed and evaluated for temperament using exit velocity (EV) at d 21 to 24, and at 28 d intervals thereafter. Beginning 28 d prior to weaning, and at 28 d intervals through 56 d post-weaning calves were evaluated for pen score (PS) used to calculate temperament score (TS = (EV+PS)/2). The average TS from 28 d prior to weaning and weaning was used to generate temperament groups; calves 1 SD below the mean being calm, those 1 SD above the mean being temperamental and all remaining classified as intermediate. Calf TS influenced WW (P = 0.04) and ADG from birth to weaning (P = 0.03). Serum TP at 24 h affected (P 0.05) WW and ADG from birth to weaning. Serum IgG at 24 h affected (P = 0.03) WW. Brahman bulls (n = 41) were evaluated for RFI, insulin-like growth factor I (IGF-I), temperament, reproductive development, and ultrasound carcass traits. Serum was collected at d 0 and d 70 of the feeding trial and analyzed for IGF-I. Bulls were classified as efficient, intermediate, or inefficient (RFI classification method I) and as efficient or inefficient (RFI classification method II). Bulls were evaluated for temperament at weaning using TS. Temperament influenced (P 0.05) IGF-I concentrations at d 0. Reproductive development was not affected (P 0.05) by TS. Residual feed intake classification did not influence (P 0.05) age at reproductive milestones. Ultrasound carcass traits were not affected by TS or RFI. Serum TP at 24 h was a viable indicator of future growth performance. Temperamental animals had lower growth rates in both studies. Reproductive development was not affected by RFI. BW at reproductive milestones was lower in temperamental bulls.

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1994 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reciprocal Cross Differences in Brahman Hereford F2 Cows written by Bradley Allen Wright and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Data from 75 F2 Brahman-Hereford cows of four specific breed combinations, F2 HB (produced by F1 HB sires x F1 HB dams, where "HB" refers to cattle sired by Hereford bulls and out of Brahman cows), F2 BH (produced by F11 BH sires x F1 BHdams), HB x BH and BH x HB, were evaluated for maternal performance at the Texas A & M Research Center near McGregor. Differences between breed combinations were analyzed for calf crop born (CCB), calf crop weaned (CCW), calf survival (CS), birthweight (BW), weaning weight (WW), and cow weight at palpation (PW). The adjusted means for F2 HB, F2 BH, HB x BH, and BH x HB were 0.84 " 0.06, 0.57 " 0.07, 0.82 " 0.06, and 0.62 " 0.08, respectively, for CCW. F2 HB cows had a 0.27 " 0.09 higherpercent calf crop weaned than F2 BH cows (P

Download or read book Evaluation of Postpartum Udder Characteristics of F1 Cows Sired by Angus Gray Brahman Gir Indu Brazil Nellore and Red Brahman Bulls written by David Greg Riley and published by . This book was released on 1997 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1996 with total page 2372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the New Zealand Society of Animal Production Annual Conference written by New Zealand Society of Animal Production and published by . This book was released on 2007 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Breeding Strategy to Improve Ethiopian Boran Cattle for Meat and Milk Production written by and published by ILRI (aka ILCA and ILRAD). This book was released on 2011-01-01 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heat Stress and Animal Productivity written by Anjali Aggarwal and published by Springer Science & Business Media. This book was released on 2012-12-30 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr. Anjali Aggarwal is working as a Senior Scientist at National Dairy Research Institute, Karnal (India). She holds a PhD degree in Animal Physiology and is involved in research and teaching at post-graduate level. Her area of research work is stress and environmental physiology. She has more than 50 publications, two technical bulletins, four manuals and many book chapters to her credit. She has successfully guided many post-graduate and PhD students. Her major research accomplishments are on microclimatic modification for alleviation of heat and cold stress, mist and fan cooling systems for cows and buffaloes, and use of wallowing tank in buffaloes. Her work involves the use of technology of supplementing micronutrients during dry period and early lactation to crossbred and indigenous cows for alleviating metabolic and oxidative stress and improved health and productivity. Studies are also done in her lab on partitioning of heat loss from skin and pulmonary system of cattle and buffaloes as a result of exercise or exposure to heat stress. Dr. R.C. Upadhyay is working as Head, Dairy Cattle Physiology Division at National Dairy Research Institute, Karnal (India). He graduated in Veterinary Sciences and obtained his PhD degree in Animal Physiology. His area of recent research is climate change, stress, and environmental physiology. His major research accomplishment is on climate change impact assessment of milk production and growth in livestock. His work also involves studying methane conversion and emission factors for Indian livestock and use of IPCC methodology of methane inventory of Indian livestock. Heat shock protein-70 expression studies in cattle and buffaloes are also done in his lab. Draught animal power evaluation, fatigue assessment, work-rest cycle and work limiting factors form the highlights of his work. Studies on partitioning of heat loss from skin and pulmonary system of cattle and buffaloes and electrocardiographic studies in cattle, buffalo, sheep and goat are also undertaken in his lab. He has more than 75 research papers, four books and several book chapters to his credit. Technologies developed and research done by him include methodology of methane measurement: open and closed circuit for cattle and buffaloes; inventory of methane emission from livestock using IPCC methodology; livestock stress index: thermal stress measurement based on physiological functions; and draught power evaluation system and large animal treadmill system. He received training in Radio-nuclides in medicine at Australian School of Nuclear Technology, Lucas heights, NSW, Australia in 1985 and Use of radioisotopes in cardiovascular investigations at CSIRO, Prospect, NSW, Australia, during 1985-86. He has guided several post-graduate and PhD students. He is recipient of Hari Om Ashram Award-1990 (ICAR) for outstanding research in animal sciences.

Download or read book Future of Livestock Industries in East and Southern Africa written by Jackson A. Kategile and published by ILRI (aka ILCA and ILRAD). This book was released on 1993-01-01 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trends in smallholder livestock enterprises; The impact of the introduction of exotic cattle in East and southern Africa; Intensive animal feeding practices for optimum feed utilisation; Importance of strong research-extension linkages in increasing livestock production in sub-Saharan Africa; Research on smallholder dairy research programmes in subhumid areas; Dairy/beef production systems research programme in Malawi; Research on smallholder dairy production in coastal lowland Kenya; Smallholder dairy on-farm research in Burundi; Smallholder dairy in Ethiopia; Dual-purpose goat research in western Kenya; Contribution of crossbred goats to milk production and social welfare in Burundi; Dairy goat research and extension at Sokoine University of Agriculture (lowlands) and Mgeta (hithlands) areas of Tanzania; Dual-purpose cattle in central Tanzania; Peri-urban small-scale dairy research programme in Botswana; Research on small ruminant production systems in Zimbabwe; Disease control approaches; Economic implications of the control of East Coast fever in eastern, central and southern Africa; Immunisation of cattle against East Coast fever: experiences in Zanzibar; Sustainable control methods for ticks and tick-borne diseases in Africa; New vaccine strategies against heartwater; Economics of trypanosomiasis control: research implications; Development of smallholder dairying; Smallholder dairy production in Zambia; Smallholder dairy development in Malawi; Kenya National Dairy development project; Dairy development programme in Tanga, Tanzania; Smallholder dairy development programme in resettled and communal areas in Zimbabwe; Development of smallholder dairying in Zanzibar; Marketing options for livestock products: a total systems cum-managerial perspective; Other production systems; Group ranch concept and practice in Kenya with special emphasis on Kajiado District; Introduction of dairy cattle production systems in soil conservation areas; Wool and mohair production in Lesotho; Synthesis of constraints to livestock research and development and recommendations.