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.

To help you top see the aftereffect of the latest crossbreeding towards intimate precocity of crossbreed pet, the fresh AFC are analyzed centered on: crossbreed kind of, competition out of sire mothers (bull and inseminated regional cows), hybridization height and you can inventory facilities

The indicate age to start with calving for all types put together is ± weeks, representing up to 36 months (two years 11 weeks 19 days ± eleven days 1 day). One particular precocious heifers calved in this couple of years ( months). Having 50% out of heifers, first calving is at months. The original services occurred on average within ± days ( in order to days).

New imply AFC of crossbreeds are less than those people stated one of many Zebu in tropics on more forty months stated a number of education ( Rahman et al., 2016 ; Tellah et al., 2015a , 2015b ; Bashir and you may Este Zubeir, 2013 ; Sokouri et al., 2010 ; Bayemi et al., 2005 ). , 2015 ). Some experts provides stated show most close to our very own observance to your additional crossbreeds during the Africa, notwithstanding cow types used in the fresh try out: 34 weeks among Montbeliard crossbreeds within the Algeria ( Madani and Mouffok, 2008 ) and you can Morocco ( Srairi and you will Mousili, 2014 ), ± 0.43 days about Girolando crossbreed for the Benin ( Doko mais aussi al., 2012 ). It was a comparable to the Holstein-Friesian hybrid cattle in Ethiopia within thirty six.cuatro ± step 1.seven days, the Borgou and Lagunaire breeds during the thirty-six.step 1 ± 6.29 days into the Benin ( Adamou-Ndiaye et al., 2003 ) along with the fresh Azawak Zebu on thirty six.5 ± 4.ten and you will ± thirteen weeks inside Niger ( Achard and you can Chanono, 2006 , 1997 ).

Our very own observation is actually higher than men and women said by Genzebu ainsi que al. (2016) one of hybrid cattle within the Kenya (26.9 ± 5.4 and you may 27.0 ± 3.seven weeks). It absolutely was slightly much better than the fresh new observations from the Ngodigha mais aussi al. (2009) regarding 31.eight ± dos.5 days certainly one of crossbreeds (Holstein x Bunadji) into the Nigeria, Ben Salem ainsi que al. (2009) regarding 30.7 ± cuatro.1 year for the Holstein inside the Tunisia and you may Srairi and Mousili (2014) regarding 30 months in the Montbeliard voir le site web when you look at the Morocco. Specific version circumstances with the AFC were examined to help you reach the comments.

Among the many additional crossbreeding items understood ( Dining table step 1 ), the latest Fulani Zebu (FZ) inseminated having semen off Montbeliard (MB x FZ) and you can Alps Brownish (Ab x FZ) possess introduced probably the most precocious corssbreeds (earliest calving during the couple of years) (5%). When you find yourself, the latest inseminations out-of Fulani Zebu cattle into the semen away from Holstein (HT x FZ) and off Tarentaise (T x FZ) then the insemination away from Gudali Zebu cows which have sperm of Montbeliard (MB x GZ) has actually brought the newest precocious crossbreed cows.

Minimal is actually weeks plus the limit was days

Table step one: Decades in the beginning calving (months) considering crossbreeding input milk products cows farms in your community from Bobo-Dioulasso during the Burkina Faso

The study concerned about the newest reproduction track of twenty (20) hybrid cows as a consequence of brand new interbreeding from the artificial insemination anywhere between local reproduce cows (Gudali Zebu and you can Fulani Zebu) and you will unique reproduce bulls (Holstein, Alps Brown, Tarentaise, Montbeliard). These types of crossbreeds had been born between 1999 and you can 2010 and you will provided their very first calf anywhere between 2002 and you can 2012 on the three enhanced inventory farms inside urban and you will residential district aspects of Bobo-Dioulasso. Every one of these facilities provides on fifty crossbreed cattle when you look at the manufacturing. The first farm is located in a city, the second 10 Km aside within southern leave additionally the 3rd sixty Kilometres out in the east hop out out-of Bobo-Dioulasso. Original studies anywhere between throughout these parts assisted to pick such three facilities with a cattle check in (temperatures and you will phony insemination monitoring sheets). Events connected with private tabs on animal reproduction such calving dates, times of very first heats and you can inseminations have been filed each and every day by the brand new cattlemen plus the inseminators. The fresh exploitation of them data managed to make it you can to decide twenty (20) first calving’s comparable to the initial functions. These types of facilities is actually characterized by the clear presence of forgotten, an effective herd health monitoring, a guided breeding setting (mainly AI, getting insufficient a specified bull), this new concentrate offers (cotton cake or cottonseed and you will commercial malt) on ration eating and you may rigorous shipments of silage and you will agricultural by circumstances. The actual only real reason for this process style of ‘s the design and sales regarding yourself processed milk, twice a day (early morning and you can evening). This new concentrates try offered on the dogs on their come back from grazing along with the new morning at milking time.