نتایج جستجو برای: 1630 thousand rails 2306 total for average lactation length

تعداد نتایج: 10670770  

Journal: :Poljoprivreda 2021

The aim of the present research was to determine hematological and biochemical parameters Travnik pramenka ewes during lactation. Thirty‐six in average age 3-5 years were included research. They monitored three stages lactation: early, medium, late stage. WBC RBC, HGB concentration, HCT MCH values increased significantly as lactation progressed, while significant decrease MCV MCHC determined bl...

Journal: :iranian journal of applied animal science 2013
i. boujenane

in this study, the incomplete gamma function, an exponential function, a mixed-log function and a polynomial function were evaluated to describe the lactation curve in moroccan holstein-friesian dairy cows. data from 1990 to 1999, comprising 77130 monthly milk yields of 6029 dairy cows in 280 dairy herds, were used. edits were carried out by considering the lactation length (5 d and

2010
M. A. Quddus M. R. Amin

The study was undertaken to identify the constraints of native cattle genetic resource conservation at the farm level along with their features of breeding system and profitability. Five different study sites like south-west, northern hills, industrial zone, north-west and mid-region were selected representatively from all over the country. A total of 280 cattle farmers from the selected region...

2007
Peadar G. Lawlor

Many factors influence litter size. These include genetics, gilt management, lactation length, parity distribution, disease, stress and boar fertility. In the past 20 years, litter size in Irish sows has increased by only one pig. Born alive figures now average at 11.2 pigs per litter. In this regard, Ireland is falling behind our European competitors who have made significant advances over thi...

2005
P. K. Singh Dhirendra Kumar

First lactation records (174) of Jersey×Sahiwal and Holstein Friesian×Sahiwal half breds under 9 sires maintained at Chandra Shekher Azad University of Agriculture and Technology, Kanpur, Uttar Pradesh, India from 1975-1983, were used to estimate the genetic parameters and to predict herd life milk yield and average milk yield per day of herd life from first lactation traits. The traits include...

Journal: :Journal of animal science 1997
P A Kemme J S Radcliffe A W Jongbloed Z Mroz

Ninety-six (Finnish Landrace x Dutch Landrace) reproductive sows were used at parities 1, 3, 5, and 7 + 8 from d 107 of gestation to d 21 of lactation to investigate the effects of diet and parity on apparent total tract digestibility (ATTD). Animals were randomly assigned to one of four dietary treatments. Dietary treatments were 1) a P-deficient (1.1 g digestible P [dP]/kg) Dutch semipractica...

2007
Peadar G Lawlor P Brendan Lynch

Many factors influence litter size. These include genetics, gilt management, lactation length, parity distribution, disease, stress and boar fertility. In the past 20 years, litter size in Irish sows has increased by only one pig. Born alive figures now average at 11.2 pigs per litter. In this regard, Ireland is falling behind our European competitors who have made significant advances over thi...

ژورنال: Journal of Railway Research 2014
Betanzo-Quezada, E., Obregón-Biosca, S.A., Romero, J.A.,

In this paper a two-degree-of-freedom model representing the sprung mass and the sloshing cargo in a vehicle is proposed to study the dynamic interaction of a sloshing cargo and the carrying vehicle, to simulate the dynamic wheel forces on the rails as a result of lateral perturbations derived from turnings along the railway path and the resultant cargo sloshing. The use of the Fourth- and T...

Journal: :Operations Research Letters 2005

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