This proves you to crossbreed cows are intimately a great deal more precocious than just tropical cows ( Wassie mais aussi al

Data extracted from the analysis of herd records were entered in Excel. The descriptive statistical analysis of the age at first calving (calculation of frequencies, means, standard deviations, minimum and maximum) was made with the XLSTAT software (6.1.9 release). These parameters were analyzed by ANOVA and the results were compared using the Newman-Keuls test. Differences were considered significant for p < 0.05.

So you can greatest comprehend the effectation of the latest crossbreeding towards the sexual precocity of crossbreed animals, the latest AFC are examined based on: crossbreed variety of, battle from sire moms and dads (bull and inseminated regional cattle), hybridization peak and you can inventory farms

Brand new mean age to start with calving for all types built was ± days, representing approximately 3 years (two years 11 days 19 weeks ± 11 days 24 hours). More precocious heifers calved within 2 years ( months). Getting 50% regarding heifers, basic calving is at weeks. The first features were held an average of at the ± months ( so you can weeks).

This new imply AFC of your own crossbreeds try below those individuals said one of several Zebu under the tropics in the over forty weeks said in many knowledge ( Rahman ainsi que al., 2016 ; Tellah mais aussi al., 2015a , 2015b ; Bashir and you may El Zubeir, 2013 ; Sokouri et al., 2010 ; Bayemi et al., 2005 ). , 2015 ). Certain article authors features advertised show most alongside our very own observation into different crossbreeds for the Africa, despite cow breeds used in the latest try: 34 weeks among the many Montbeliard crossbreeds during the Algeria ( Madani and you may Mouffok, 2008 ) and you will Morocco ( Srairi and you may Mousili, 2014 ), ± 0.43 weeks about Girolando crossbreed in the Benin ( Doko mais aussi al., 2012 ). It actually was the same into Holstein-Friesian hybrid cows in Ethiopia during the 36.cuatro ± 1.7 months, the brand new Borgou and you can Lagunaire types at 36.step one ± six.31 weeks inside Benin ( Adamou-Ndiaye ainsi que al., 2003 ) along with the newest Azawak Zebu at thirty six.5 ± 4.ten and you will ± thirteen weeks into the Niger ( Achard and Chanono, 2006 , 1997 ).

Our observance was higher than the individuals reported by Genzebu et al. (2016) certainly one of crossbreed cattle inside the Kenya (26.nine ± 5.4 and you can twenty seven.0 ± step three.eight weeks). It was somewhat a lot better than brand new findings from the Ngodigha mais aussi al. (2009) regarding 31.eight ± dos.5 weeks among crossbreeds (Holstein x Bunadji) within the Nigeria, Ben Salem et al. (2009) regarding ± cuatro.1 year inside the Holstein in the Tunisia and you can Srairi and you can Mousili (2014) out of 30 weeks into the Montbeliard in the Morocco. Certain version factors associated with AFC have been assessed to help you achieve the statements.

Among other crossbreeding products understood ( Desk step one ), the latest Fulani Zebu (FZ) inseminated with semen from Montbeliard (MB x FZ) and you will Alps Brown (Ab x FZ) has introduced the quintessential precocious corssbreeds (basic calving at the a couple of years) (5%). When you find yourself, brand new inseminations regarding Fulani Zebu cows with the semen regarding Holstein (HT x FZ) and you may regarding Tarentaise (T x FZ) then your insemination from Gudali Zebu cows with sperm off Montbeliard (MB x GZ) provides brought the latest precocious hybrid cattle.

Minimal try months and limit is actually weeks

Desk step 1: Years in the beginning calving (months) considering crossbreeding input milk cattle farms in the area regarding Bobo-Dioulasso from inside the Burkina Faso

The study focused on new reproduction track of twenty (20) hybrid cattle resulting from the fresh new interbreeding from artificial insemination anywhere between regional reproduce cattle (Gudali Zebu and Fulani Zebu) and you can unique breed bulls (Holstein, Alps Brownish, Tarentaise, Montbeliard). Such crossbreeds was basically born between 1999 and you may 2010 and provided their earliest calf ranging from 2002 and you may 2012 towards the about three enhanced stock facilities into the metropolitan and you may suburban areas of Bobo-Dioulasso. Each one of these facilities possess from the 50 hybrid cattle inside the creation. The initial farm is situated in an urban area, next ten Kilometer away at the southern area log off while the 3rd sixty Km aside at the eastern get off regarding Bobo-Dioulasso. Initial surveys ranging from in these portion assisted to select these about three facilities which have a livestock sign in (temperatures and you will artificial insemination monitoring sheets). Incidents about personal tabs on animal reproduction particularly calving times, times of your very first heating and inseminations was indeed recorded each day of the brand new cattlemen additionally the inseminators. The exploitation of these files caused it to be you are able to to decide twenty (20) first calving’s add up to the first services. These farms try described as the clear presence of missing, a great herd wellness keeping track of, a led breeding form (mostly AI, getting diminished a designated bull), this new focus provides (cotton fiber cake otherwise cottonseed and you will commercial malt) in the ration feeding and you can extreme delivery away from silage and you may agricultural by issues. The only aim of this procedure type is the development and sale from manually canned milk products, twice a day (day and you can evening). The new centers was offered toward pet on their come back away from grazing plus new early morning from the milking day.