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Evaluation of reference lactation length in Chios dairy sheep [PDF]

Animal, 2019
Definition and establishment of a fixed reference lactation length could provide useful tools for on-farm comparison of ewes and flock management as well as genetic evaluations for the breeding programme. The objectives of this study were to (i) evaluate
Z. Basdagianni, E. Sinapis, G. Banos
doaj   +8 more sources

Correlation between teat length and lactation periods on the level of subclinical mastitis occurrence in Sappy Valley Farm [PDF]

E3S Web of Conferences, 2022
This study aims to determine the correlation between dairy cattle teat length at several lactation periods and subclinical mastitis profile. This study used 43 dairy cattle at several lactation periods.
Siagian Tetty Barunawati, Amidjaya Surya Hapsara   +1 more
doaj   +2 more sources

COMPARISON OF DIFFERENT PROCEDURES FOR LACTATION LENGTH ADJUSTMENT OF MILK YIELD IN SAHIWAL CATTLE [PDF]

Pakistan Veterinary Journal, 2004
The purpose of the present study was to compare three procedures for lactation length adjustment of milk yield. For this purpose, weekly milk yield records (n = 2039) of Sahiwal cows were used. Multiplicative adjustments using simple linear regression of
I. R. Bajwa, M. S. Khan, M. A. Khan1 and K. Z. Gondal2
doaj   +2 more sources

Determinants of prolonged weaning-to-service interval in primiparous Landrace × Yorkshire sows under tropical conditions: Impact of age at first farrowing, lactation length, and litter size at weaning [PDF]

Veterinary World
Background and Aim: Primiparous sows are particularly vulnerable to prolonged weaning-to-service interval (WSI), which negatively impacts reproductive efficiency and farm profitability.
Nguyen Hoai Nam, Do Thi Kim Lanh, Nguyen Van Thanh, Bui Van Dung, Peerapol Sukon   +4 more
doaj   +2 more sources

THE EFFECT OF GRADING UP ANKOLE CATTLE OF BURUNDI WITH SAHIWAL ON MILK PRODUCTION PERFORMANCE OF COWS [PDF]

Journal of Animal and Poultry Production, 2000
Total of 510 lactation records, representing five successive parities, were collected on 102 cows (20 Ankole and 82 Sahiwal x Ankole crosses)  to study the effect of grading up Ankole cattle of Burundi with Sahiwal breed on both   total milk yield and ...
H. Nimenya, S. Rashwan, M. Anous,
doaj   +1 more source

Effect of reproductive indices and bovine somatotropin on milk yield in Holstein cows experiencing climatic sub-fertility

Mljekarstvo, 2023
This study aimed at determining the association between reproductive indexes and the total milk yield in non-planed lactations ≥600 days in sub-fertile Holstein cows treated or not with recombinant bovine somatotropin (rbST) and experienced prolonged ...
Marcos Luna, Juan Encina, Perpetuo Álvarez, José E. García, Jesús Mellado, Miguel Mellado   +5 more
doaj   +1 more source

A randomized study on the effect of extended voluntary waiting period in primiparous dairy cows on milk yield during first and second lactation

Journal of Dairy Science, 2023
: Extending the voluntary waiting period (VWP) for primiparous cows can have a positive impact on fertility without a negative impact on milk production per day in the calving interval (CInt).
A. Edvardsson Rasmussen, K. Holtenius, R. Båge, E. Strandberg, M. Åkerlind, C. Kronqvist   +5 more
doaj   +1 more source

Evaluation of production performance of Binjharpuri cattle of Odisha

Indian Journal of Animal Sciences, 2023
Binjharpuri, a dual purpose indigenous breed of Odisha is commonly reared for its various advantages, viz. optimum milk production in low input management system, excellent draft ability in hot humid climate condition and heat resistance ability. In the
NAYAK S, GOSWAMI R N, DAS G C, ZAMAN G, DAS B, PHOOKAN A, KHANIKAR D   +6 more
doaj   +1 more source

The Effect of Calf Gender on Milk Production in Seasonal Calving Cows and Its Impact on Genetic Evaluations.

PLoS ONE, 2016
Gender of the calf whose birth initiates lactation could influence whole lactation milk yield of the dam due to hormonal influences on mammary gland development, or through calf gender effects on gestation length.
Melanie K Hess, Andrew S Hess, Dorian J Garrick   +2 more
doaj   +1 more source

Genetic parameters for milk yield of Bubalus bubalis using unadjusted and adjusted milk production for days in milk.

Italian Journal of Animal Science, 2010
The objectives of this study were to estimate genetic parameters for unadjusted and adjusted milk production for 270 and 305 days of lactation and, subsequently, to verify the coincidence of rank of 2%, 5%, 20% and 40% best sires selected based on both ...
L.G. Albuquerque, M.M.M Laureano, F.S. Baldi, H. Tonhati   +3 more
doaj   +1 more source