Effect of prill fat supplementation on hormones, milk ... - Veterinary World

17 downloads 0 Views 72KB Size Report
Jun 9, 2014 - fat supplementation on plasma hormones and milk production in .... days increased @ 0.50 kg/ d/cow in the supplemented cows (PFG) over theĀ ...
Veterinary World, EISSN: 2231-0916 Available at www.veterinaryworld.org/Vol.7/June-2014/4.pdf

RESEARCH ARTICLE Open Access

Effect of prill fat supplementation on hormones, milk production and energy metabolites during mid lactation in crossbred cows 1

2

1

1

3

Mahendra Singh , J. P. Sehgal , A. K.Roy , S. Pandita and G. Rajesh

1. Division of Animal Physiology, National Dairy Research Institute, Karnal, 132001 Haryana, India; 2. Division of Animal Nutrition, National Dairy Research Institute, Karnal, 132001 Haryana, India; 3. Division of Veterinary Physiology, Indian Veterinary Research Institute, Izatnagar - 243122, Uttar Pradesh, India Corresponding author: Mahendra Singh, email: [email protected] JPS: [email protected], AKR: [email protected], SP: [email protected], Received: 13-03-2014, Revised: 26-04-2014, Accepted: 03-05-2014, Published online: 09-06-2014 doi: 10.14202/vetworld.2014.384-388 How to cite this article: Singh M, Sehgal JP, Roy AK, Pandita S and Rajesh G (2014) Effect of prill fat supplementation on hormones, milk production and energy metabolites during mid lactation in crossbred cows, Veterinary World 7(6): 384-388.

Abstract Aim: To find out the effect of prill fat feeding on milk production and hormonal changes in crossbred cows. Materials and Methods: Crossbred cows in mid lactation (150 days) were selected from the institutes' herd. The observations on dry matter intake (DMI), body weight, body condition score (BCS)were recorded and milk composition, plasma metabolites viz., glucose and Nonesterified fatty acids (NEFA) were measured in control (CON) and experimental prill fat group (PFG) cows. During the experimental period, PFG cows were fed with bypass prill fat @ 75 g/d for a period of 90 days. Results: The DMI and body weight of cows was non-significant (P>0.05) between the groups, but BCS of cows improved in the CON group. Crude protein and Total digestible nutrients (TDN) intake/kg body weight was more (P>0.05) in PFG over the CON. Milk yield, plasma hormones - Growth hormone, triiodothyronine and thyroxine (GH, T3, T4) was significantly lower in CON group over the PFG cows (P